EP 0816824 B1 20010404 - Method of monitoring and controlling yield stress in rheologically plastic fluid
Title (en)
Method of monitoring and controlling yield stress in rheologically plastic fluid
Title (de)
Verfahren zum Überwachen und Regeln der Fliessgrenzspannung einer rheologisch-plastischen Flüssigkeit
Title (fr)
Méthode de contrôle et de régulation de la limite d'écoulement d'un fluide rhéologiquement plastique
Publication
Application
Priority
US 67601896 A 19960705
Abstract (en)
[origin: US5652376A] The yield stress of rheologically plastic fluids such as coatings, sealants, and personal care lotions, determines their tendency to flow at low gravitational stress. Yield Stress is the apparent threshold stress above which flow is observed on an arbitrary time scale. An on-line technique to monitor yield stress during processing was developed, and can be used in controlling the slump or non-slump behavior of such products. A residual stress, after a flow excursion returns to zero shear rate, is related to yield stress. This residual stress can be used for process monitoring. It is measured from the residual pressure or torque after a controlled strain rheometer reaches zero strain rate.
IPC 1-7
IPC 8 full level
G01L 1/00 (2006.01); G01N 11/00 (2006.01); G01N 11/04 (2006.01); G01N 11/08 (2006.01); G01N 33/44 (2006.01)
CPC (source: EP US)
G01N 11/08 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB
DOCDB simple family (publication)
US 5652376 A 19970729; AU 2845297 A 19980115; AU 711991 B2 19991028; CA 2209104 A1 19980105; CN 1175686 A 19980311; DE 69704460 D1 20010510; DE 69704460 T2 20020328; EP 0816824 A2 19980107; EP 0816824 A3 19980923; EP 0816824 B1 20010404; JP H1082728 A 19980331; KR 980010380 A 19980430; TW 382062 B 20000211
DOCDB simple family (application)
US 67601896 A 19960705; AU 2845297 A 19970703; CA 2209104 A 19970627; CN 97114067 A 19970704; DE 69704460 T 19970701; EP 97110705 A 19970701; JP 17938597 A 19970704; KR 19970030916 A 19970704; TW 86108934 A 19970626